Article
Thermodynamics
Talal Alqahtani
Summary: This study aims to assess the performance of the Hybrid Solar Thermal Storage (HSTS) system, which combines latent phase change material and thermochemical storage system. Three storage system designs are proposed and numerically investigated, and key performance indicators such as volumetric storage capacity and energy storage efficiency are used to evaluate them. The results show that integrating a reaction heat recovery internal system based on Na3Al as PCM can significantly improve the energy storage efficiency of the HSTS system, and using a PCM in truncated hollow cones can reduce heat charging and discharging time, increase storage capacity, and specific power.
APPLIED THERMAL ENGINEERING
(2023)
Article
Chemistry, Physical
Alberto Boretti
Summary: The manuscript reviews thermochemical water-splitting cycles for producing hydrogen coupled with high temperature concentrated solar energy. The review shows that three-step cycles benefit the most from synergy with higher solar flux dispatchable concentrated solar power. Preliminary evaluations suggest that three-step cycles may enable CO2-free hydrogen production within a decade at a competitive cost.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
Xiangyu Han, Liang Wang, Zhiwei Ge, Xipeng Lin, Yu Liu, Shuang Zhang, Zhitao Zuo, Haisheng Chen
Summary: Through the study of Co-based metal oxides doped with Al and Cr in the Co3O4/CoO system, it is found that doping can reduce thermal hysteresis, increase oxidation temperature, and inhibit material sintering, ensuring the reversibility of the redox reaction.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2023)
Article
Chemistry, Physical
Meng Lin, Clemens Suter, Stefan Diethelm, Jan Van Herle, Sophia Haussener
Summary: This study introduced an integrated reactor concept for high-temperature electrolysis to convert concentrated solar energy into fuels and chemical feedstock. Experimental results suggested that endothermal operation can improve performance and predict promising solar-to-hydrogen efficiency.
Article
Energy & Fuels
Yumeng Zhang, Zhuo Wang, Zhiyu Du, Yue Li, Meng Qian, Jan Van Herle, Ligang Wang
Summary: This paper proposes an innovative method that integrates concentrated solar heat with solid oxide electrolysis for cost-competitive hydrogen production. By optimizing heat cascade utilization and considering cost reduction of essential components, the cost of hydrogen production can be significantly reduced from 4.6 Euro/kg to 1.7 Euro/kg in 2030, achieving cost-competitiveness with hydrogen produced by traditional non-renewable energy sources.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Thermodynamics
Julian C. Restrepo, Diego Luis Izidoro, Albany Milena Lozano Nasner, Osvaldo Jose Venturini, Electo Eduardo Silva Lora
Summary: This study analyzed the production of renewable hydrogen using concentrated solar energy, proposed efficient production paths, and estimated production costs. A novel hydrogen production approach combining HTE, CPV, and concentrated thermal energy was proposed.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Energy & Fuels
Mehdi Mehrpooya, Bahram Ghorbani, Mohammadmahdi Khodaverdi
Summary: A novel integrated system for renewable energy production of hydrogen, power, and hot water from solar thermal energy has been developed, and its thermodynamic performance has been evaluated. The system demonstrates high energy efficiency and conversion efficiency.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Energy & Fuels
Lili Yang, Guan Huang, Zhiqing Huang
Summary: In this study, Ca-based thermochemical materials doped with Fe and Mn elements were synthesized via the sol-gel method, showing that the added Fe and Mn elements can enhance the absorption and cyclic stability of the materials. Additionally, it was found that the porosity and pore size of CaCO3/CaO can be controlled by adjusting the amount of citric acid used during processing.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Chemistry, Physical
Alberto de la Calle, Ivan Ermanoski, Ellen B. B. Stechel
Summary: The efficiency of many processes depends on their thermodynamic reversibility, which means operating near equilibrium. In certain thermochemical cycles, approaching equilibrium is possible only at a specific temperature for the reaction step, and the temperature profile also depends on the gas and solid flow ratio.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Green & Sustainable Science & Technology
Hangbin Zheng, Xianglei Liu, Yimin Xuan, Chao Song, Dachuan Liu, Qibin Zhu, Zhonghui Zhu, Ke Gao, Yongliang Li, Yulong Ding
Summary: This study proposes a different solar thermochemical heat storage system based on direct solar illumination on fluidized black CaCO3 pellets, achieving higher solar absorptance and solar-chemical efficiency by optimizing the design of the black CaCO3 pellets.
Review
Chemistry, Physical
Stephane Abanades
Summary: Redox materials have been extensively studied for thermochemical processing applications such as solar fuel production, ammonia synthesis, thermochemical energy storage, and air separation. These materials can be processed in redox cycles to produce fuels from H2O and CO2 splitting, and for ammonia synthesis based on chemical looping cycles. They can also be used for solar thermochemical energy storage and oxygen separation from air.
Article
Chemistry, Multidisciplinary
Chanon Pornrungroj, Virgil Andrei, Erwin Reisner
Summary: Photoelectrochemical reactors can utilize waste heat by integrating thermoelectric modules, achieving unassisted water splitting and enhanced photocurrent. This thermal management approach provides a universal strategy for widespread solar fuel production.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Energy & Fuels
Stefan Brendelberger, Philipp Holzemer-Zerhusen, Estefania Vega Puga, Martin Roeb, Christian Sattler
Summary: Solar thermochemical redox cycles offer a promising solution for large-scale renewable hydrogen production. A new receiver-reactor concept is introduced that combines successful features from existing systems with high efficiency potential concepts. The key features include movable reactive structures, linear transportation systems, and dedicated oxidation reactors. The application of multiple units allows continuous operation and solid-solid heat recovery. A numerical model demonstrates the high efficiency potential and heat recovery rates of up to 20%. This new concept paves the way for highly performant systems and offers flexibility for reactor design and optimization.
Article
Energy & Fuels
Sarah Shulda, Robert T. T. Bell, Nicholas A. A. Strange, Lucy Metzroth, Karen N. N. Heinselman, Sami Sainio, Subhayan Roychoudhury, David Prendergast, Anthony H. H. McDaniel, David S. S. Ginley
Summary: Understanding the role of oxygen vacancy-induced atomic and electronic structural changes during water-splitting processes is crucial for solar thermochemical hydrogen production. Synchrotron X-ray techniques, such as X-ray diffraction and absorption spectroscopy, provide valuable insights into the complex metal oxides' properties and behavior during water-splitting cycles.
FRONTIERS IN ENERGY RESEARCH
(2022)
Article
Energy & Fuels
Rahul R. Bhosale
Summary: The study conducted thermodynamic efficiency analysis of the Gd2O3/GdO-based solar-driven thermochemical CO(2) splitting cycle. The results showed that the rise in %TR-Gd significantly affected the process parameters associated with the cycle, and the efficiency was enhanced up to 7.2% with heat recuperation at 20% TR-Gd.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Thermodynamics
Selvan Bellan, Nobuyuki Gokon, Koji Matsubara, Hyun Seok Cho, Tatsuya Kodama
Article
Engineering, Chemical
Selvan Bellan, Tatsuya Kodama, Koji Matsubara, Nobuyuki Goko, Yun Seok Cho, Kousuke Inoue
CHEMICAL ENGINEERING SCIENCE
(2019)
Article
Chemistry, Physical
Selvan Bellan, Nobuyuki Gokon, Koji Matsubara, Hymn Seok Cho, Tatsuya Kodama
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2018)
Article
Engineering, Environmental
Selvan Bellan, Tatsuya Kodama, Koji Matsubara, Nobuyuki Gokon, Hyun Seok Cho, Kousuke Inoue
CHEMICAL ENGINEERING JOURNAL
(2019)
Article
Thermodynamics
Nobuyuki Gokon, Takehiro Yawata, Selvan Bellan, Tatsuya Kodama, Hyun-Seok Cho
Article
Thermodynamics
Nobuyuki Gokon, Satoshi Kumaki, Yosuke Miyaguchi, Selvan Bellan, Tatsuya Kodama, Hyunseok Cho
Article
Thermodynamics
Nobuyuki Gokon, Kazuki Hara, Yuta Sugiyama, Selvan Bellan, Tatsuya Kodama, Cho Hyun-seok
THERMOCHIMICA ACTA
(2019)
Article
Energy & Fuels
Nobuyuki Gokon, Kosuke Hayashi, Hiroki Sawaguri, Fumiya Ohashi
Summary: This study evaluated the performance of Fe-substituted manganese oxide for long-term cyclic thermal storage and heat-charging kinetics in a concentrated solar power system. The findings reveal the reaction mechanisms and behavior of Fe-substituted manganese oxide under different conditions, providing insights for thermochemical energy storage.
Article
Energy & Fuels
Nobuyuki Gokon, Fumiya Ohashi, Hiroki Sawaguri, Kosuke Hayashi
Summary: This study investigates the heat-discharging kinetics of an iron-substituted Mn2O3/Mn3O4 redox pair subjected to long-term thermal cycling tests for next-generation concentrated solar power plants with thermochemical energy storage. Comparisons of the heat-discharging kinetics for both long-term thermal-cycled and as-prepared samples have never been discussed previously. Kinetic evaluations of samples with thermally stable morphologies subjected to long-term thermal cycling at high temperatures are important for the reproducibility and sustainability of thermochemical energy storage in solar thermal power plants. The predicted theoretical models for both samples were compared with previous kinetic data.
Proceedings Paper
Energy & Fuels
Selvan Bellan, Tatsuya Kodama, Koji Matsubara, Nobuyuki Gokon, Hyun Seok Cho
SOLARPACES 2018: INTERNATIONAL CONFERENCE ON CONCENTRATING SOLAR POWER AND CHEMICAL ENERGY SYSTEMS
(2019)
Proceedings Paper
Energy & Fuels
Nobuyuki Gokon, Aoi Nishizawa, Takehiro Yawata, Selvan Bellan, Tatsuya Kodama, Hyun-seok Cho
SOLARPACES 2018: INTERNATIONAL CONFERENCE ON CONCENTRATING SOLAR POWER AND CHEMICAL ENERGY SYSTEMS
(2019)
Proceedings Paper
Energy & Fuels
Tatsuya Kodama, Hyun Seok Cho, Kouske Inoue, Tatsuya Saito, Shouta Watanabe, Nobuyuki Gokon, Selvan Bellan
SOLARPACES 2018: INTERNATIONAL CONFERENCE ON CONCENTRATING SOLAR POWER AND CHEMICAL ENERGY SYSTEMS
(2019)
Proceedings Paper
Green & Sustainable Science & Technology
Tatsuya Kodama, Nobuyuki Gokon, Hyun Seok Cho, Selvan Bellan, Koji Matsubara, Kousuke Inoue
INTERNATIONAL CONFERENCE ON CONCENTRATING SOLAR POWER AND CHEMICAL ENERGY SYSTEMS (SOLARPACES 2017)
(2018)
Proceedings Paper
Green & Sustainable Science & Technology
Nobuyuki Gokon, Shinpei Takagi, Selvan Bellan, Hyun-seok Cho, Tatsuya Kodama
INTERNATIONAL CONFERENCE ON CONCENTRATING SOLAR POWER AND CHEMICAL ENERGY SYSTEMS (SOLARPACES 2017)
(2018)
Proceedings Paper
Green & Sustainable Science & Technology
Selvan Bellan, Koji Matsubara, Hyun Seok Cho, Nobuyuki Gokon, Tatsuya Kodama
INTERNATIONAL CONFERENCE ON CONCENTRATING SOLAR POWER AND CHEMICAL ENERGY SYSTEMS (SOLARPACES 2017)
(2018)
